Device for rolling gun-barrels or tubes.



N0. 640,992. Patented Jan. 9, [900.

C. P. CARLSON.

DEVICE FOR ROLLING GUN BARRELS 0R TUBES.

(Application filed July 28, 1898.] (No Model.) 3 Sheeis-Sheei I.

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No. 640,992. Patented Ian. 9, i900.

c. P. CARLSUN. I DEVICE FOR ROLLlNG GUN B'ABRELS on TUBES.

(Application filed July 28, 189 B.) (No Model.) 3 Sheets-Sheet 2.

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DEVICE FOR ROLLING G UN BABRELS 0R TUBES.

' (Application filed July 28, 1898.)

(No Model.) 3 Sheets-Sheet 3.

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PATENT Fries.

CHARLES P. CARLSON, OF MOKEESPORT, PENNSYLVANIA.

DEVICE FOR ROLLING GUN-BARRELS OR TUBES.

SPECIFICATION formingpart of Letters Patent'No. 640,992, dated January 9, 1900.

Application filed July 28, 1898. Serial No. 687,063. (No model.)

To all whom it may concern:

Be it known that I, CHARLES P. CARLSON, a citizen of the United States of America, residing at McKeesport, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Devices for Rollin g Gun-Barrels or Tubes; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

This invention relatesto certain new and useful improvements in a device for rolling gun-barrels and seamless tubes.

The invention has for one object the provision of a device for the above-described purposes which is simple in construction, practical in its operation, and comparatively inexpensive to construct and maintain.

Another object of my invention is to provide a means in connection with my device whereby tapered tubes or gun-barrels can be formed from a hollow ingot.

With the above objects in view the invention finally consists in the novel construction, combination, and arrangements of parts, as will be hereinafter more specifically described in detail.

In describing the invention in detail reference is had to the accompanying drawings, forminga part of this specification,and wherein like numerals of reference designate like parts throughout the several views,in which- Figure 1 is a front view of myimproved device. Fig. 2 is a plan view of the same. Fig. 3 is a view looking at the left-hand end of the device. Fig. 4 is a View looking at the right-hand end of the same. Fig. 5 is an end sectional view through the same on the line A B of Fig. 1. Fig. 6 is an enlarged front view of a part of the mechanism employed for rolling tapered tubes. Fig. 7 is an enlarged top View of the rolling-disks. Fig. 8 is a front view of one of the same. Fig. 9 is a face view of one of the rolling-disks. Fig.

10 is a top plan View of my improved device with a portion of the housing removed.

Referring now to the drawings for a detailed description of the parts of the device, the numeral 1 designates a suitable housing withwindows or openings 1' formed therein. A roller-disk 2 is secured fast to the inner end of the horizontal shaft 3, which is arranged within that end of the housing. An opening 4 is formed through the housing at the end of the shaft and has fitted therein the movable block 5,Which bears against the end of said shaft and that of the adj usting-screw 6. A roller-disk 7, similar to the aforesaid roller, is secured fast upon the end of the horizontal shaft 8 at the opposite end of the housing, said shaftand disk being set parallel with the aforesaid shaft and disk, but at a lower elevation, as shown. Upon the rear of the housing are formed suitable bearings for supporting the shaft 9, and upon this shaft is secured a drive-pulley l0 and gearpinion 11. This gear-pinion meshes with the gear-wheel 12 upon the shaft of the roller disk for the purpose of rotating the same. Another horizontal shaft 13,which is arranged below the aforesaid shaft, has a pinion 14 secured thereto, which meshes with the gearwheel15 upon the other roller-disk shaft. A pair of pinions 16 and 17 couple these two shafts together, so that when power is applied to the pulley 10 each disk will revolve in opposite directions. Projecting from the rear of the housing are the two rods 18 and 18, which are connected at their outer ends by the cross-piece 19 for supporting the mandrel. At the front of the housing and opposite the roller-disks is the upright guidestand 20,with an opening 20 formed therein. Projecting inwardly from this stand to a point between the roller-disks are the guides 21 and 21 for guiding the hollow ingot between the rolls. A mandrel 22, which rests at its rear end upon the aforesaid cross-piece 19, projects between the disks and guides, and upon this mandrel is loosely fitted the sleeve 23, which is of such outer diameter as to neatly fit between the guides, so as to center the mandrel in position. I

A short shaft 24: is arranged within a. suitable bearing upon the housing and is provided with a groove 24 along itsfouter end, and upon this end of the shaft is fitted the gear pinion 25, which is capable of being moved along the shaft and at the same time be revolved thereby. A tapered wedge 26 is fitted within an opening across the end of the housing and engages against the end of the aforesaid shaft 8. Agear-rackis formed upon this wedge, the teeth of which mesh with the pinion. A disk 27 is arranged upon the opposite end of the shaft 24 and is provided with the openings 27, and upon the shaft 8 is formed the collar 28, which has a projecting tooth 28' for engaging with one of the openings of the disk at each revolution.

The inner or working faces of the rollerdisks are alike in form and are of peculiar construction, as will be seen by the drawings at Figs. 7, 8, and 9. These faces are formed eccentrically by a spiral flange 29, of suitable thickness, which begins with an offset or shoulder at the point marked a: and extends inwardly toward the center, and the edge around the periphery of this flange gradually decreases in thickness until it runs out even with the disk and at the same time tapers inwardly to the original thickness at the center. A groove, such as 30, is formed around the faces of the disks to aid them to grasp the ingot and draw it through.

In practice if it is desired to roll a tube of tapered form the power is applied to rotate the roller-disks in opposite direction, and when they reach the point at which the tapered faces are the greatest distance apart the hollow ingot is introduced between the guides onto the mandrel. The rotation of the disks gradually draws the ingot or tube inwardly, shoving the sleeve 23 before it, and at every revolution of the disks the tooth of the collar 28 engages with one of the openings 27 of the disk 27, causing it to revolve the pinion 25 one-sixth of a revolution. This pinion in revolving forces the wedge 26 inward, which in turn acts upon the end of the rollerdisk shaft and forces it forward step by step in alateral manner, thus decreasing the space between the roller-disks. This action continues as the tube is drawn through, and the result is that when the tube comes out at the opposite side it will be of a tapered form.

Particular attention is called to the fact that the step-by-step movement of the disk 27 is timed to occur when the lowest part of the spiral flange or cam-face thereof is opposite the work: This is evident by the arrangement of the tooth 28 upon the shaft 24 in the manner shown.

In rolling straight tubes the pinion 25 is disengaged from the rack upon the wedge, and by operating the screw the space between the disks may be increased or diminished.

Having thus shown and described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an apparatus of the class described, the combination with a housing, of a pair of disks suitably mounted therein, an eccentric spiral flange formed on the working face of each disk, means for rotating said disks, and means for moving one of said disks step by step in a lateral direction toward the other disk when the lowermost part of its eccentric flange is in contact with the tube being rolled, substantially as described.

2. In an apparatus for rolling tubes, the combination, of a suitable housing, a pair of disks mounted therein, an eccentric spiral flange formed on the Working face of each of said disks, a guide arranged between the disks, a mandrel operating through the said guide, means for adjusting the distance between the said disks, and means connected to one of said disks for moving the same step by step in a lateral direction toward the other disk when at each revolution thereof the lowermost part of its eccentric flange is in contact with the tube.

3. In an apparatus of the class described, a housing, a pair of disks mounted 011 different centers within said housing, an eccentric flange formed on the working face of each of said disks, and means connected to one of said disks for moving the same step by step in a lateral direction toward the other disk when the lowermost part of its eccentric flange is in contact with the tube.

4. In an apparatus for rolling tubes, the combination of a suitable housing, a pair of disks mounted upon different centers arranged in the said housing and having their working face provided with an eccentric flange, and means connected to one of the said disks for moving the same laterally toward the other after a revolution thereof, substantially as set forth.

5. In an apparatus for rolling tubes, the combination of a suitable housing, a pair of shafts mounted therein, a disk mounted on the inner end of each of the said shafts and provided on their workin g face with an eccentric flange, means for rotating the said shafts in opposite directions, a collar mounted on one of the said shafts and provided with a tooth, and means adapted to be operated by the said tooth for laterally moving one of the said disks toward the other after each revolution thereof, substantially as shown and described.

6. In an apparatus for rolling tubes, ahousing, a pair of shafts journaled therein, a disk mounted on each of the said shafts and hav-' ing an eccentric flange on their working face, a gear-wheel mounted on each of the said shafts, shafts 9 and 13 journaled in the said housing, a pinion carried by each of the said shafts 9 and 13, and adapted to mesh with the said gear-wheel for operating the same, means for coupling the shafts 9 and 13 together, a collar mounted on one of the said disk-shafts and provided with a tooth, and means adapted to be operated by the said tooth for laterally moving one of the said disks toward the other after each revolution thereof, substantially as herein set forth.

7. In an apparatus for rolling tubes, the combination of a suitable housing, a pair of shafts journaled therein, a disk mounted on each of the said shafts and provided on their working face with an eccentric flange, a guidestand, inwardly-projecting guides formed integral therewith, a mandrel, a sleeve for centering the said mandrel, means for rotating thesaid disks in opposite directions, a collar mounted on one of the said disk-shafts and provided with a tooth, and means adapted to be operated by the said tooth for laterally moving one of the said disks toward the other after each revolution thereof, substantially as herein shown and described.

8. In an apparatus for rolling tubes, the combination of a suitable housing, a pair of shafts journaled therein, a disk mounted on each of the said shafts and provided on their working face with an eccentric flange, means for rotating the said disks in opposite direotions, means for increasing or diminishing the distance between the said disks consisting of a collar mounted on one of the disk-shaf ts and provided with a tooth, a shaft 24 having a WM. H. LEAHY, J r, J OH DANNHARDT. 

